105. VALUE OF MUSCLE BIOPSY IN ANCA-ASSOCIATED VASCULITIS: DIAGNOSTIC YIELD DEPENDS ON ANCA TYPE. (29th March 2019) - Lacou, Mathieu; Leroy, Maxime; Espitia-Thibault, Alexandra; Toquet, Claire; Graveleau, Julie; Masseau, Agathe; Agard, Christian; Volteau, Christelle; Hamidou, Mohamed; Néel, Antoine